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Finding the Fourth Proportional to 321,752.70, 482,670.05 and 122,130.18

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Solution

The fourth proportional to 321,752.70, 482,670.05 and 122,130.18 is: 183,210.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,752.70 : 482,670.05 = 122,130.18 : x
  2. Step 2: Convert to fraction form
    321,752.70/482,670.05 = 122,130.18/x
  3. Step 3: Cross multiply
    321,752.70x = 482,670.05 × 122,130.18
  4. Step 4: Simplify right side
    321,752.70x = 58,948,579,476.46
  5. Step 5: Solve for x
    x = 58,948,579,476.46/321,752.70
  6. Step 6: Final answer
    x = 183,210.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.